CZ builds the best replacement magazines in the industry. Casual shooters, professional shooters, and tactical pros prefer to use CZ for all their magazine needs. They are great because they use factory originals. This magazine is manufactured to the precise tolerances and specs as the factory original. It is also constructed from the exact same materials as the original, meaning this magazine will give you great reliability and will always function properly. It is always a good idea to keep some extra factory-specified magazines in your range bag or in your holster. You will save crucial time with loading, reloading, and can gain a tactical advantage with these extra mags. They offer great feeding.